Telephone hook-switch.



No. 839,839. PATENTED JAN. 1, 1907.

' G. D. FOSTER.

TELEPHONE HOOK SWITCH. urmdnxou FILED muse, 1904.

2 SHEETS-SHEET 1.

310. 839,830. P. TENTH? JAN, 1, 1907.

TELEPHGfiE HWY. SWITL'H APPLICATION FILED JULYZQ. 1904 citizen of the United States of .Fig. 4 is a bottom plan of the same.

other place Where it is desirable chosen 1). resins,

OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN ELECTRIC TELEPHONE COMPANY, OF CHICAGO, lLLlNOlS, A COR;

PORATION.

TELEPHONE HOOK-SWlTCH.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed July 26, 1904. Serial No. 218,301.

v To ctZZ whmn it may concern:

Be it known that l, GE-onei. D. FOSTER, a America, and

a resident of Chicago, Cook county, Illinois,

have invented a certain new and useful improvement in Telephone Hook-Switches, of

which the following is a specification.

My invention relates to subscribers tele phone apparatus; and it relates more particu larly to the hook-switch upon which the receiver is normally supported and by whichthe connection is automatically established when thesaid receiver is removed therefrom, and ittherefore con templates a hook-switch having a hook or lever arm which is readily removable from the balance of the, switch and which may be easily and qu ckly removed from the subscribers telephone apparatus independently of all other parts, and it also contemplates certain details and features of improvement ten-ding to increase the general efiiciency of a device of this'character.

In the accompanying drawings, Figure 1 is a perspective of a subscribers wall-telephone set having a hook-switch embodying the principles oi my invention. Fig. 2 an enlarged vertical section. through the box or front portion of the said'wall telephone set, showing the receiver removed, so as to permit the switch-hook to rise, and showing the hook-switchin side elevation. Fig. 3is atop plan of the hook-switch shown in Fig. 2. Fig. 5 is a horizontal section on line 5 5 in Fig. 2. ig. 6 is avertical section on. line 6 6 in F g. 2. Fig. 7 is a perspective of the' inner end portion of the switch-hook, showing the same extending through the speciallyiormed escutcheon employed. in connection with the said hook. Fig. 8 a perspective of the bearing or portion oi the bracket upon which. the said hook is removably mounted.

it will be readily understodd that my im proved hook-switch can be employed in connection with any l'mown, approved, or desired form of telephone apparatus. Obviously it may be included in the apparatus of a walltelcphone set or a desk set orin any to support a telephone-receiver or other instrument in such manner that a connection is automatically established when said receiver or other instrument is'removed from its normal resting-place. For this reason andalthough I be observed that the forked end of the hook V B extends through the side of the box and is adapted to support the telephone-receiver in the manner illustrated. The inner end of said switch-hook is provided with a pivot-pin b, and the bracket plate or body C of the said hook-switch is'provided With an upright portion D, formed at its top with an overhan ing and downwardly-bent portion d. Sald pivot-pin Z) is, it will be seen, adapted to engage the inner ends or terminal portions of two slots d and (2 formed in the parallel upper portions of the upright D. So far as the broad idea of a switch-hook which is readily removable independently of all other parts is concerned it is obvious that any suitable spring arrangement can be employed for raising the hook when the telephone-receiver is removed therefrom. For example, the bracket-plate C may be formed with a raised box-like portion c, having one end portion of a spring E secured thereto. As illustrated, the other end portion of this spring is pro- 'vided with a depression (2, adapted to be engaged by a lug 1), extending downwardly from the under side of the switch-hook. In addition it will be seen that the spring E has a downwardly-bent portion 6, adapted when the hook is up to engage the under side of a piece of insulation 0 which is rigidly secured to upwardly-bent side portions 0 of the bracket-plate and which acts as a stop to limit the upward movement of said spring. The forked end portion c of the said s; ring straddles lhe inner lower switcliing-s1 wing F, which also when the hook is up bears upon the under side of the insulation Normally the spring portion c bears against the switch-spring F; but when the hook isup then the spring portion 0 bears against and establishes electrical connection between the two upper swilchingsirings G and 1-1, as shown in Fig. 2. It will be a? served that the lifting-spring E has a slotv 5 whereby it may be properly adjust-ed upon the bracket-plate, and also that all 01"" said springs are preferably secured to the bracketplate by means oi screws I. and J, with small disks of insulation 1, and 3 serving to insulate the switching-springs from each other-and hook-switch is removed.

The eseutcheon K is preferably formed witha vertical slot k and with horizontally or laterally extending slots is. With. this construction the said escutcheon can be socured to the outer surface of the box A in the usual and well-known manner and without inte'fering with the easy removal of the' switch-heck. This is due, it will be seen, to the fact that said escutcheon has the horizontal slots 7c throu h which the pivo t-pin bmay pass readily wien the switch-hook is withdrawn. Thus, as stated, the switch hook is readily removable independently of all other parts and without producing abnorma]. or undesirable positions on the part of anyof the switch-springs or other elements.

N 1th the arrangement shown and described it will. be seen that the switch-hook B is removable without entering the inclosure or casing of the telephone. It can also be replaced without opening or entering'said casing.

,Frnin theforegoing it will be seen that my invention comprises two eleInents-namely, the switch-hook and the base and that, broadly insidered, one of such elements is provided with a pivot, while the other 'ele ms'ent is provided with a notch adaptedto be en 'a 'ed b the said ivot the li'ltnn surin b r: r b l of the switch serving to keep the pivot properly seated. in the notch, thus ermitting the switch-lrookv to be readily and easily in-- sorted in and removed from the base.

invention is--- fi' hat I claim as my 1, subscribens telephone apparatus compris an inclosed hookswitch having a hook why readily. removable independently of i i portionsof the apparatus,

said hook hsviz its outer end adaptedto re ceive and support a telephone-receiver, and said hoot: being removable endwise in the direction of its outer end without entering the inclo'surel 2. A. subscribers tele hone set comprisilv a support, a switch-boo removablypivotei upon said support, spring'means for operat ing said h oh, and means for inclosing all exe i outs-r end of said hoeig'said i 1 (ill-Li end adapted to receive ed therein and an operating-lever and support a tele hone-receiver, and said hook being reniova le endwise in the direction or its outer end without entering the mclosure.

3. A hook-switch comprising a slotted bearing portion, a lever provided with a pivot-pin adapted to be inserted in said slots, spring means for operating said lever-arm, means for inclosing all except the free outer end portion of said lever-arm,'ai1d an escutcheonsecured to said inclosure and formed. with both vertical and horizontal slots through which the lever-arm and its pivot may pass when said arm is withdrawn.

4. A hook-switch comprising a support, an inclosure, a lever-arm removably pivoted thereon, a lifting-spring engaging the lever arm, a stop adapted to engage and limit the upward -movement of said s ring, switchsprings engaged and operated y said lifting spring, and a slot through which the lever is removable without entering the inclosure.

5. A telephone set comprising a switchhook provided at its inner end with a rigid pivot-pin, said hook and its pin being readily removable independently of all other parts, and a casin inclosing all but the outer end of said switc -hook, said switch-hook removable and replaceable without entering the casing.

6. A telephone set comprising a switch.- hook provided at its inner end with a rigid pivot-pin, a spring-switchoperated by said switch-hook, and a bracket-plate-adapted to receive said pivot-pin, whereby the hook and its pin are'removable as a unit independently. of all other parts, and a casing inclosing a'll but the outer end of said switch-hook, said switch-hook removable. and replaceable with out entering the casing. 7. A telephone hook-switch comprisinganoperatingspring, switch ing-springs, and rigid insulating means for engaging the operatingspring and thereby holding the sameand the switching-springs in operative position when the switch-hook is removed from the struc-v ture, said insulating means adapted to engage the end of the operating-spring.

8. In a telephone hook-switch, the combination with a closed casing, of a base mount so pivoted on said base that it may be removed without entering the casing.-

9. In a telephone .base and a lever for operatin said circuitchanging device and so pivote on said base that it may be removed from engagement ith the'base and the circuit-changing device without cntering the casing.

10. In a telephone hook-switch, the combinationwith a closed casing, of a base mounted therein and an operating lever-ee pivoted on said base that it. may be removed hook-switch, the comb nation with a closed casing, of a base therein,

roo

, in, a circuit-changing device without entering theeesing', the base being provided with oblidu'slots, and the said lever having a pivot a-depted to engage said slots.

11. In a telephone hook-switch, the combinetion with at closed casing, of a base thereniounted on. the base and a lever for operating seid circuitoha-nging device and so pivoted on said base that .it may be removed from engagement with the base and the circuit-changing device without enterin the casing, and an escu tcheon secured to the outside of said eesingend provided with averticel slot for the lever, and with a horizontal slot to permit the leverpivot to pass through the escutoheon.

12. In a telephone hook-switch, the combinetion of a. hook, a base, it pivot on one of said elements, the other element having e pivotingend releasing notch en "aged by said pivot, switoh'contacts niounte on the base and operated by said hook, and e liftingspring engagin the hook to keep the pivot properly seate inv the said notch, whereby the hook is easily released from and inserted in said base.

Signed by me at Chicago, Cook county, Illinois, this 23d day of July,1904.

. GEORGE D, FOE/WEB.

Witnesses: CLARENCE M. THORNE, WALTER A. SI'ITIG. 

